High-accuracy mass determination of neutron-rich rubidium and strontium isotopes

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Abstract

The Penning trap mass spectrometer ISOLTRAP, installed at the on-line isotope separator ISOLDE at CERN, has been used to measure atomic masses of 88,89,90m,91,92,93,94Rb and 91,92,93,94,95Sr. Using a resolving power of R≈1 million a mass accuracy of typically 10 keV was achieved for all nuclides. Discrepancies with older data are analyzed and discussed, leading to corrections to those data. Together with the present ISOLTRAP data these corrected data have been used in a general mass adjustment.

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    1

    Present address: Dresdner Bank AG, D-60301 Frankfurt, Germany.

    2

    Present address: Data Care AG, Eisenstr. 58, D-65428 Rüsselsheim.

    3

    Present address: Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, IL 60439, USA.

    4

    Present address: JYFL, Jyväskylä, Finland.

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